Benchmark: table rewrite vs insert row

HTML Preparation code:

<table id="t"></table>

Script Preparation code:

var t = document.getElementById('t');
var tt = document.getElementById('tt');
var ttt = document.getElementById('tt');


function render() {
const out = ['<tr>'];
  for(let i = 0;i<7;i++) out.push('<td>'+i+'</td>');
  out.push('<tr>');
  return out.join('');
}

 function renderEl() {
  const rowEl = document.createElement('tr');
   for(let i = 0;i<7;i++) {
   const td = document.createElement('td');
     rowEl.appendChild(td);
   }
   return rowEl;
 }
 function hibrid() {
  const rowEl = document.createElement('tr');
   const out = [];
   for(let i = 0;i<7;i++) out.push('<td>'+i+'</td>');
    rowEl.insertAdjacentHTML('afterbegin', out.join(''));
   return rowEl;
 }

Tests:

render
t.innnerHTML = ''; t.insertAdjacentHTML('afterbegin', render());
renderEl
t.innnerHTML = ''; t.appendChild(renderEl());
hibrid
t.innnerHTML = ''; t.appendChild(hibrid());

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
render
renderEl
hibrid

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Definition**

The benchmark is designed to measure the performance of three different approaches for rendering table data: `render`, `renderEl`, and `hibrid`. The main difference between these approaches lies in how they construct the HTML string or append it to an existing element.

**Approaches Compared**

1. **`render`**: This approach uses a function that directly returns an HTML string by joining individual elements with `out.push('<td>'+i+'</td>');`. It then assigns this string to the `innerHTML` property of the table element (`t.innnerHTML = '');`.
2. **`renderEl`**: In this approach, a new `tr` element is created using `document.createElement('tr')`, and individual `td` elements are appended to it using `appendChild`. The resulting `tr` element is then assigned to the table element (`t.appendChild(renderEl());`).
3. **`hibrid`**: This approach uses a similar method to `renderEl`, but instead of creating an array of HTML strings, it uses `insertAdjacentHTML('afterbegin', out.join(''))` to insert the HTML string directly into the table element.

**Pros and Cons**

*   **`render`**: Pros:
    *   Simple and concise implementation
    *   Fewer DOM mutations (only one assignment)
    *   Potential for better cache performance (due to fewer DOM updates)

Cons:
    *   Returns a large HTML string, which might be difficult to parse or cache
    *   May require more memory allocation due to the creation of a new string object

*   **`renderEl`**: Pros:
    *   Can be seen as a more modular and reusable approach
    *   Potential for better performance due to fewer DOM mutations (only one append operation)
    *   More intuitive for developers familiar with working with individual elements

Cons:
    *   Requires more code and complexity due to the creation of an intermediate element
    *   May have slightly worse cache performance due to multiple DOM updates

*   **`hibrid`**: Pros:
    *   A balance between simplicity and modularity, as it combines the benefits of both approaches
    *   Fewer DOM mutations compared to `renderEl`

Cons:
    *   Slightly more complex implementation than `render`, with additional overhead from `insertAdjacentHTML`
*   **Additional Considerations**

*   **DOM updates**: Both `render` and `hibrid` update the table element's inner HTML, while `renderEl` appends a new element. This can impact performance and cache behavior.
    *   **Memory allocation**: The creation of large HTML strings or multiple DOM elements can lead to increased memory usage.
    *   **Browser caching**: Different approaches might interact with browser caches in various ways, affecting performance.

**Libraries Used**

None are explicitly mentioned in the provided benchmark definition.

**Special JS Features or Syntax**

The following special JavaScript features/syntaxes are used:

*   `insertAdjacentHTML()`: A modern method introduced in ECMAScript 2017 for inserting HTML into an element.
*   `innerHTML` property: A standard property of HTML elements that allows setting and retrieving the inner HTML content.

**Alternatives**

If you're looking to measure performance differences between these approaches, consider using other benchmarking libraries or tools. Some popular alternatives include:

*   WebPageTest
*   Benchmark.js
*   micro-benchmark
*   jsperf

These tools can help you create more robust and accurate benchmarks with various features, such as parallel execution and event loop simulation.

Related benchmarks:

table rewrite vs insert row (version: 0)

Comparing performance of: render vs renderEl vs hibrid

Created: 4 years ago by: Guest

Jump to the latest result

render

renderEl

hibrid

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):